CVE-2026-34979: CWE-122: Heap-based Buffer Overflow in OpenPrinting cups
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.
AI Analysis
Technical Summary
CVE-2026-34979 is a heap-based buffer overflow vulnerability (CWE-122) in the OpenPrinting CUPS scheduler in versions up to 2.4.16. The issue arises during the construction of filter option strings from job attributes, potentially causing memory corruption. The vulnerability is remotely exploitable without authentication and requires no user interaction, but it only impacts availability. No official patch or remediation has been released as of the publication date.
Potential Impact
The vulnerability can cause a denial of service by crashing the CUPS scheduler due to heap memory corruption. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploitation in the wild has been reported.
Mitigation Recommendations
At present, no official patches or fixes are available. Users should monitor the OpenPrinting project for updates and apply any future patches promptly. Until a fix is released, consider restricting network access to the CUPS service to trusted users only to reduce exposure.
CVE-2026-34979: CWE-122: Heap-based Buffer Overflow in OpenPrinting cups
Description
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-34979 is a heap-based buffer overflow vulnerability (CWE-122) in the OpenPrinting CUPS scheduler in versions up to 2.4.16. The issue arises during the construction of filter option strings from job attributes, potentially causing memory corruption. The vulnerability is remotely exploitable without authentication and requires no user interaction, but it only impacts availability. No official patch or remediation has been released as of the publication date.
Potential Impact
The vulnerability can cause a denial of service by crashing the CUPS scheduler due to heap memory corruption. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploitation in the wild has been reported.
Mitigation Recommendations
At present, no official patches or fixes are available. Users should monitor the OpenPrinting project for updates and apply any future patches promptly. Until a fix is released, consider restricting network access to the CUPS service to trusted users only to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-31T19:38:31.617Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d031770a160ebd925d2013
Added to database: 4/3/2026, 9:30:31 PM
Last enriched: 4/11/2026, 9:14:34 AM
Last updated: 5/20/2026, 12:09:57 PM
Views: 93
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